Car truck of the six-wheel or three-axle type



Jan. 15 1924. v

C. L. ORR ET AL CAR TRUCK OF THE SIX-WHEEL 0R THBEE AXLE 'IYllil FiledJan. 18 1923' 2 Sheets-Sheet 1 wucntoz:

Jan. 15, 1924.

.C. L. ORR ET AL cm TRUCK or THE SIX-WHEEL 0R THREE-AXLE TYPE Filed Jan.18,

1923 2'Sheets-Sheet 2 lll llll Patented Jan. 15, 1924.

UNITED STATES PATENT OFFICE.

CLAUDE L. ORB AND GEORGE '1. JOHNSON, OF COLUMBUS, OHIO, ABSIGNOBS TOTHE BUCKEYE STEEL CASTINGS COMPANY, OF COLUMBUS, OHIO.

CAR TRUCK OF THE SIX-WHEEL OB THREE-AXLE TYPE.

Application filed January 18, 1923. Serial No. 613,440.

To all whom it may concr'rn 7 Be it known that we, CLAUDE L. ORR andGnonon T. JOHNSON, citizens of the United States, and residents ofColumbus, in the 5 county of Franklin and State of Ohio, have inventedcertain new and useful Improvements in Car Trucks of the Six-Wheel orThree-Axle Type; and We do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

Our present invention relates to car trucks of the six wheel or threeaxle type and par- 1 ticularly to that form of six-wheel truck in whichthere are three equalizin members, each having an axle box, and a sidehearing or bridge member connecting the truck bolsters and arranged atthe outer side of the equalizing members. While these trucks have beenoperated successfully and have proven satisfactory, it has been foundthat sometimes the bolster-connecting bridge member would rock laterallyand eventually lose its alinement, assuming a ermanent inclinationinwardly or outwar ly relative to the side of the truck. It is theobject of the present invention to provide a construction whereby thebridge will be connected to the bolsters in such a manner as to preventthe lateral rocking and maintain the alinement of the bridge memberthroughout the life of the same. This object and other incidentalobjects which will appear in the course of the following description areattained in the construction and arrangement illustrated in theaccompanying drawing and hereinafter fully set forth.

In the drawing, Figure 1 is a planview of one side of a truck embodyingour present improvements;

Figure 2 is a side elevation of the same;

Figure 3 is an enlarged lan view of the bridge member, the centraportion thereof being broken out and omitted;

Figure 4 is a side elevation of the bridge member, the central portionbeing broken out;

Figures 5 and 6 are detail plan views of ends of the truck bolsters.

The sides of the truck are duplicates in construction and each comprisestwo end equalizing members 1 and 2, and a central equalizing member 3,the end members being offset to form long arms which overlie and arepivotall I connected with the relativel far ends 0 the central member 3.Eric membcr carries a journal box 4 for an axle 5 and the end membersare also constructed with seats 6 for springs 7 on which the ends of thebolsters 8 rest. The bridge member 9 is disposed at the outer side ofthe equalizing side frame members and is constructed at its ends withdepending jaws 10 which span the ends of the respective bolsters andsnugly embrace them so thatno bolts or other means of attachments areneeded to secure the bolsters and bridge together. By reference toFigures 3, 5 and 6, 1t will be noted the jaws of the bridge memberpresent end edges 11 and 12, and that the bolsters are recessed on theirsides, as at 13, to receive the jaws of the bridge and present verticalshoulders 14 and 15 to oppose and form guides for the edges or faces 11and 12 respectively. It will also be noted, upon reference to Figure 1,that the parts are so proportioned that the edge or end portions orfaces 12 of the bridge form guides for the outer sides of the equalizingmembers or side frames. The guides for the inner sides of the sideframes are furnished by the vertical shoulders 16 on the bolsters.

It will be readily noted upon reference to Figures 1 and 2 that theshoulders 14 and 15 on the bolsters provide guides for the bridge whichextend the full height of the bolsters and efl'ectually resist anytendency of the bridge to rock transversely of the truck so that thealinement of the brid e is maintained and all needed flexibility 1n thetruck is retained. The construction of the bridge and the bolsters issuch that they effect an interlocking engagement so that the bridgecannot get out of alinement.

Having fully described our invention what we claim as new and desire tosecure by Letters Patent, is 1- 1. In a six-wheel truck of the typedescribed, the combination of the bolsters and a bridge engaging theends of the bolsters and interlocking with the latter, whereby the useof bolts or similar means of attachment other than the interlockingconnection is obviated.

2. In a six-wheel car truck of the type described, the combination ofbolsters having recesses in their sides, and a bridge proyided at itsends with depending jaws to engage in said recesses whereby to maintainits alinenient. i

3. In a car truck of the type described, the combination of a bridgemember having depending jaws at its ends, and bolsters fitting betweenthe'jaws and having spaced vertical shoulders to engage the end surfacesof the jaws.

4. In a car truck of the type described, the combinationof a bridgemember having depending jaws at its ends, and bolsters fitting betweenthe jaws and provided at their outer ends with guides for the jawswhereby to maintain the alinement of the bridge.

5. In a car truck of the type described including equalizing sideframes, the combination of bolsters passing transversely through theside frames, and a bridge engaging the ends of the bolsters, the innerside of the bridge constituting guides for the side frames of the truck.

6. In a car truck of the type described including equalizing sideframes, the combination of bolsters engaged transversely in the sideframes, a bridge engaged over the ends of the bolsters and constitutingguides for the side frames, and guides or the bolsters for the bridgemaintaining the alinement of the bridge. I i

In testimony whereof, we hiu'esigned this specification 1n the presenceof two subscribing witnesses.

CLAUDE L. ORR. GEORGE T. J OHNSON Witnesses:

JACOB C. LARSEN, JOHN S. MGPrmnsoN.

